Entity: usbdev_usbif

• File: usbdev_usbif.sv

Diagram

Description

Generics

Generic name	Type	Value	Description
NEndpoints	int	12
AVFifoWidth	int	4
RXFifoWidth	int	4
MaxPktSizeByte	int	64
NBuf	int	4
SramAw	int	4
NBufWidth	int	$clog2(NBuf)	derived parameter
PktW	int	$clog2(MaxPktSizeByte)	derived parameter

Ports

Port name	Direction	Type	Description
clk_48mhz_i	input		48MHz USB clock
rst_ni	input
usb_d_i	input		Pins (synchronous)
usb_dp_i	input
usb_dn_i	input
usb_d_o	output
usb_se0_o	output
usb_oe_o	output
usb_pullup_en_o	output
usb_sense_i	input
rx_setup_i	input	[NEndpoints-1:0]	receive (OUT or SETUP) side
rx_out_i	input	[NEndpoints-1:0]
rx_stall_i	input	[NEndpoints-1:0]
av_rvalid_i	input
av_rready_o	output
av_rdata_i	input	[AVFifoWidth - 1: 0]
event_av_empty_o	output
rx_wvalid_o	output
rx_wready_i	input
rx_wdata_o	output	[RXFifoWidth - 1:0]
event_rx_full_o	output
setup_received_o	output
out_endpoint_o	output	[3:0]
out_endpoint_val_o	output
in_buf_i	input	[NBufWidth - 1:0]	transmit (IN) side
in_size_i	input	[PktW:0]
in_stall_i	input	[NEndpoints-1:0]
in_rdy_i	input	[NEndpoints-1:0]
set_sent_o	output
in_endpoint_o	output	[3:0]
in_endpoint_val_o	output
mem_req_o	output		memory interface
mem_write_o	output
mem_addr_o	output	[SramAw-1:0]
mem_wdata_o	output	[31:0]
mem_rdata_i	input	[31:0]
enable_i	input		control
devaddr_i	input	[6:0]
clr_devaddr_o	output
ep_iso_i	input	[NEndpoints-1:0]
cfg_eop_single_bit_i	input		1: detect a single SE0 bit as EOP
cfg_rx_differential_i	input		1: use differential rx data on usb_d_i
tx_osc_test_mode_i	input		Oscillator test mode: constant JK output
data_toggle_clear_i	input	[NEndpoints-1:0]	Clear the data toggles for an EP
frame_start_o	output		status
frame_o	output	[10:0]
link_state_o	output	[2:0]
link_disconnect_o	output
link_connect_o	output
link_reset_o	output
link_active_o	output
link_suspend_o	output
link_resume_o	output
link_in_err_o	output
link_out_err_o	output
host_lost_o	output
rx_crc_err_o	output
rx_pid_err_o	output
rx_bitstuff_err_o	output

Signals

Name	Type	Description
out_max_used_d	logic [PktW:0]	OUT or SETUP direction
out_max_used_q	logic [PktW:0]	OUT or SETUP direction
out_ep_put_addr	logic [PktW-1:0]
out_ep_data	logic [7:0]
out_ep_current	logic [3:0]
out_ep_data_put	logic
out_ep_acked	logic
out_ep_rollback	logic
current_setup	logic
all_out_blocked	logic
out_ep_newpkt	logic
out_ep_setup	logic [NEndpoints-1:0]
out_ep_full	logic [NEndpoints-1:0]
out_ep_stall	logic [NEndpoints-1:0]
setup_blocked	logic [NEndpoints-1:0]
out_blocked	logic [NEndpoints-1:0]
wdata	logic [31:0]
mem_read	logic
mem_waddr	logic [SramAw-1:0]
mem_raddr	logic [SramAw-1:0]
link_reset	logic
sof_valid	logic
std_write_d	logic	always_comb don't write if the address has wrapped (happens for two CRC bytes after max data)
std_write_q	logic	always_comb don't write if the address has wrapped (happens for two CRC bytes after max data)
out_max_minus1	logic [PktW:0]
in_ep_xfr_end	logic	IN (device to host) transfers
in_ep_data_get	logic	IN (device to host) transfers
in_data_done	logic	IN (device to host) transfers
in_ep_newpkt	logic	IN (device to host) transfers
pkt_start_rd	logic	IN (device to host) transfers
in_ep_data_done	logic [NEndpoints-1:0]
in_ep_get_addr	logic [PktW-1:0]
in_ep_data	logic [7:0]
in_ep_current	logic [3:0]
frame_index_raw	logic [10:0]
rx_jjj_det	logic
ns_cnt	logic [5:0]	us_tick ticks for one cycle every us
us_tick	logic

Constants

Name	Type	Value	Description
NBufWidth	int	$clog2(NBuf)	derived parameter
PktW	int	$clog2(MaxPktSizeByte)	derived parameter

Processes

• unnamed: ( )

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

• unnamed: ( )

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

• unnamed: ( @(posedge clk_48mhz_i or negedge rst_ni) )

Instantiations

• u_usb_fs_nb_pe: usb_fs_nb_pe

• u_usbdev_linkstate: usbdev_linkstate